Question 418570: girl is 5 times older than her brother, in 6 years she will be twice as old as her brother. How old are they now? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! girl is 5 times older than her brother, in 6 years she will be twice as old as her brother. How old are they now?
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Equations:
g = 5b
(g+6) = 2(b+6)
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Substitute for "g" and solve for "b":
(5b+6) = 2b+12
3b = 6
b = 2 (brother's age now)
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Solve for "g":
g = 5b
g = 10 (girl's age now)
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Cheers,
Stan H.
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